Hollow building-block and method of making same.



ofiirrnn ernifrne FERDI'LNAND 'BURC-ARTZ, GF NEVJ YORK, N. Y., SSGNE TG BUILDNG llPR/"E- MENT CO.. F IlEW` YORK, N. Y., A CGRPORATIGN OF NEWT YGRK.

HOL`L`W BULDING--B'Lill AND METHQD GF MAKING Sini/EL course, to be understood that if desired only illfigig. SPGCGSLUH 01' lets Pai-@M1 Ttfieiitd-/d I /'i di, l Application filed June '4, 24912. Seria-il No. 701.479.

'i'o @Z7 wlw/12.. it' muy concern: :i single extension may be proriifled it ozieli llo itlmown that l', Ficimmzmo ifonend ot' the blank. in wliielr ense this` single QUARTZ, n citizen oit the nited States, and extension would be oi" sufficient dimensions resident of the lioroiih of iwionlmttnn. nity, to extend eonipietely over the open ends so county, and State of New Yorin ilove inas to substantially eorethe saire; or if de vented (ertuin new and useful improve simil, and. the Cross sectional forni of the ments in l'i'ollow Buildingdloeks und Motiv blank, Wiiitli may be of any ('iesired contiguods of M ring Some, of wliieh the 'following ration.y nmlies it necessary, more than four 15 n Specification, extensions may be ineorpmated in the strun- My invention relates to liollow building` ture. lnv all er i hollow tilofl( iskieenred bloc-ki` ind lios for ite` object to produce :1. in which nil parte :1re prei ably integroi 65 block of this-description in moli n nninner und in which the interior is substantially that all parte thereof" will be integral and CloSed zigninet the ontmnee oi' any Concrete, will 'torina liollow Structure of any desired' or other oonleseent materiel which may be form mi d'uneuinm used in connection witli blocks of this de- @ther objects of my improvements; wiil Kfti'i'itioii an the suini :iro utilized for their 70 appear in the description 'liereina and Hltflldml 'PHYPOSGS- tlie tentures of novelty,r will loe pointed out fijne liloekr are inode from :t plastic innin the appended Claimg, terni suoli 11s olii-y, torni Cotto or any other Rgfgmnc is t@ be had t() the accmpfmysimilar nmteriol wliieli muy be di'zifwn or ing drmngs in Which `tort-eil tlirougli4 :i die. The nmeriul is ted 75 Figure l L pergpegtv@ View 0f une foi-m uit() A tl1t In tilt] tliltli H'llllilC-'L ttllti ltl'vti of my improved block Showing Same before the some in tlie forni of :i vominuoml reefimll Completion; Fig, i), is n end View tzmgnlar tube whit-li ont into the desired blokn @Way 0f th@ (jgnlpleijgd blQCk; Willllt i116 Hllittllllll iS Fig. 3 is :i longitudinal section tliereotl on u pornon ot opposite mills a out away n- S0 the line 3.,?, of Fig g 5 Fig @t is a pgiggpocwai-diy for er. distance from opposite ends lo tive View similar to Fig. i, of another form forni the unit or blnnl; A. and as to leave of my innoroved bloeit; ixig. is zi view the other walls a extending beyond Suid out thereof similar to Fig. i2; and Fig. 6 is a away portions to ilforin the extensions l :is longitudinal Section on i'lie line 6m@ of shown in Fig. L These extensions B while S5 Fig. the janitorial is ,still plastic :ire 1nent. inwardly Referring inoi'e particularly to Figss. l, 2 tor/:rrd tlie'liloelt or in other words toward and of the drawings the block comprises ezieli other es shown in Fi 1l and so as un open ended blank or unitwhich may be to extend over and substantmily omer the of any desired dimensions und of :my erossopen ends of die blanks A. Attei.' this liars 9o .seetiol'ml configuration. In order to elos'se or tieen done `the block in this f -ondition is @over the open ende oft said liliink l provide tinked or tired or otlierwisif. brought lo itsl the Sonie with extensions l5 wliiel'i in the rigid inifslml condition. lt will lie seen illustration are formed integral witiitwoop liv referring' to Figs. 2 und 3 tlmt the tree posite Walls of said unit and extend. toward of tlie aid extensions B do not eon- 95 the iiXiSof the seid unitI so is to snbstantizill y toet with eleli other before the baking or cover the open ends thereof :is shown clearly other finishing operation linfa taken place in Figs. Z and In the torni of bloeli but instead :ire Spaced from eael1otlierto-n Shown in Figs. Il, 5 and 6 the open ended ,Slightdeg'ree. The space between seid ends blank A instead of being provided :it oppoA permite i circulation of air within block 10o site ends Wit-l1 two extensionel is provided `and also provides for any physical. changes with four extensions B of substantially tri- "which may take place in said block during angular sha-pe and formed integral wit-ii the the iil'iisliing operation. walls of the blank, said 'extensions .all ex- In et, and t3 the block material nitty tending toward the asis ofthe block so as be Jformed into n. tubular unitin the sanne to substantially cover tin. open ends of the warnt' :is in Fig. V1. :ind is out away inwardlY block. :is illustrated best in Fig. 5. lt is, of 'for a distance Jrein mieli end to form tlie substantially triangular shaped ez'tenr-:ione

B', i e apiece et the ree enfle shown in Fig. el. 'l Similarly bent imm?" "mwen-i etliei ci'4 iowm'cl the .i of Le block es shown in Fig. 5 so to eulistainlzielly cover or close the open emule tlieifeo. In this form also it 'will 'be iieefl eli lille apiece of :Elie extensions B efe blunt i" not elm-rp sind leeve the 'liee spzicef; ll between lle These P: D) seid umu es is clearly hf y 'heee exleneiezie i2 tie ml extensions.

epe le for circuletiel of en" loir any phy el clic 'imsam y be lorie er?. into imite iii evliei' weye e. lie f at pcc ey be iemovetl there- .neil alliez than by means e open of the bloelz. lil-some instances ine-y also l, une. advisable lo Vform ille exeeiisioiis el wlieigevei kind they may be only ai; one eml e unil. so ae'to substeiilly only close this one cnil, the olghei' eiiil f 'ig lele open ci? clese. iii seme cilieiwey will fmfliei: 'be readily beiiu efvefc le euuewiiielly cover or close the by being placed in Contact with e, Wall of e. building.

My improve block owing to its strength and ginimum deed 'Weight is particularly eclepecl foi' use in. constructing floors and ceilings although it may befeund equally useful in connection with other structures.

Various changes in vthe specic :EOI-ms Shown and described may be made Within the scope of 'the claims Without departing :fiom the spirit of my invention.

l claim:

il. The method of making hollow builling blocks el plastic materiel which consisls in exil-Milug plastic meteriel through a. die to foi'l'n a, mbe el' polygonel er circuler cross section, cutting said tube into desired lengths and then cutting away a poiftion from eeeli end of the' severed len he to ferm integral ex'lensions of the po ygonel or cil-cula? body poi'tion, enel then, while the materiel is still plastic, benfln said extensions over the open ends os'a-i body portion, then baking or firing the block.

A hollow building block of circuler or pelygcnel emes section formed by extrudpleetic metei'iel through e suitable die lo ferm im open end blank, then cutting away portion oil the side wall thereof to leave end extensions, seid extensions being bent over 'the open ends of the blank te form the end wells of the block, said block being hardened by baking or iing.

ln testimony whereof l have hereunfw set my lien in the piesence of two subscribing witnesses.'

FER'DNANU BURCHARTZ.

Winesses JOHN A. KEHLENBECK, M. H. Lcciawoon. 

